The Effect of Luting Agents and Ceramic Thickness on the Color Variation of Different Ceramics against a Chromatic Background

摘要: AbstrAct Objectives: The aim of this study was to assess the influence various ceramic thicknesses and luting agents on color variation in five systems. Methods: Fifteen disc-shaped specimens (11 mm diameter; shade A3) were fabricated with each six veneering ceramics tested, 1, 1.5, or 2 thickness (n=5). Resin composite discs (Z-250, C4) used as bases simulate a chromatic background. cementation veneers carried out an opaque resin-based cement (Enforce, C4), A3), without (C4, control group). Color differences (ΔE*) de-termined using colorimeter. Three-way ANOVA analyze data, followed by Tukey post-hoc test (α=.05). Results: L*a*b* values systems affected both agent (P<.05). In general, there no difference between group cement. use resulted increase coordinates a*, b*, L*, producing ΔE* for all regard-less For 2-mm thick veneers, higher parameters obtained independent used. Conclusions: association presented strongest masking ability dark colored background when compared non- other tested. (Eur J Dent 2011;5:245-252) Key words: Ceramics; Luting agents; Thickness; Color. Gloria Beatriz de Azevedo Cubas